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How WarmUp ramping works

A brand-new mailbox that starts sending dozens of messages a day looks automated to a mail provider. WarmUp therefore begins with a small number of messages and raises it gradually, and the WarmUp/day figure you set is the maximum it works toward, not what it sends on day one.

  1. The automatic curve starts at 2 a day

    On the first day a mailbox sends 2 WarmUp messages, then 3 on the second day. From there it adds 2 more messages every 2 days, so it climbs by about one message a day on average until it reaches your WarmUp/day maximum.

  2. Reaching a high maximum takes weeks, not days

    Because the curve climbs by about one a day, a mailbox set to 40 WarmUp messages a day takes a little over five weeks to get there, and a lower maximum is reached correspondingly sooner. This is deliberate: the pace is the part that protects placement.

  3. The daily count varies on purpose

    Each day a mailbox sends between roughly 80% and 100% of the target for that day, so the pattern does not look mechanical. Some days are therefore lower than the day before even while the curve is still rising, and two mailboxes with identical settings can send different amounts on the same day. Neither is a fault.

  4. WarmUp/day is a ceiling

    Raising WarmUp/day raises the point the curve is allowed to climb to. It does not raise the volume for today. You can lower it at any time; sends already planned for today remain in place, and the lower maximum applies fully from the next UTC day.

  5. A custom ramp replaces the curve

    Choosing a custom starting point and increase per day switches to a straight line: it begins at your starting point and adds your increase every day. It reaches the maximum far sooner (starting at 5 and adding 3 a day reaches 40 in about 12 days), which is why it suits a mailbox with established sending history rather than a new one.

  6. Pausing does not reset progress

    The ramp is measured from the day WarmUp was first switched on for that mailbox. Pausing and re-enabling picks up where it left off, so a mailbox that warmed for a month and was then paused returns near its maximum rather than back at 2 a day.